Fall Semester Exam Review

When an atom loses an electron, it becomes a

• positive ion

• negative ion

• neutral ion

• neutral atom

An electron has what kind of charge?

• no charge
• positive 
• negative
• it depends

Valence electrons are found

• in the innermost energy level of an atom

• in the middle energy levels of an atom

• in the outermost energy levels of an atom

Cations

• Gain electrons, has an overall positive charge

• Lose electrons, has an overall positive charge

• Lose electrons, has an overall negative charge

• Gain electrons, has an overall negative charge

Anions

• Gain electrons, has an overall positive charge

• Lose electrons, has an overall positive charge

• Lose electrons, has an overall negative charge

• Gain electrons, has an overall negative charge

How many neutrons does the isotope of lithium have?

• 8
• 3
• 5

How many protons does this isotope of titanium have?

• 48
• 22
• 26

If a sulfur atom has 16 protons, 16 electrons, and 16 neutrons, its atomic mass is:

• 16
• 32
• 48

What is the name of the pictured isotope?

• Copper-29
• Copper-63
• Copper-34
• CopperWopperHopperBopper

Compute the average atomic mass for this element.

• 27.977
• 28.09
• 28.976
• The average mass cannot be determined from provided information.